VLC media player is my favorite..because the live option in this player is helping to get good sound in my DELL pc...for mp3 files I am using windows media player.It will catch the tiny sound to my headphones.
Windows Media Player 11 for audio and Media Player Classic for video. Not at all happy with WMP 11...so many bugs and glitches in the thing! Always wanted to shift to MediaMonkey or Zune but the thought of re-updating my whole song library is daunting, to say the least.